188 GRA.MINEAE 



2. S. jubatum J. G. Smith. Culms erect, 1 to 2 feet high, rarely taller; 

 .■sheaths smooth, scabrous or villous-pubeseent : blades flat, often becoming 

 iuvolnte, smooth or usually more or less pubescent, at least on upper surface, 

 usually not over ly^ lines wide; spike erect, dense, 1 to 3 inches long, thick 

 and bushy from the numerous long awns; glumes split into 3 or more lobes or 

 divisions, each extending into a long awn; lemmas mostly 4 to 5 lines long, 

 smooth, or scabrous toward apex, the awns and those of the glumes ly^ to 4 

 inches long. 



Rocky or l)rushy hillsides and open dry woods and plains. California to 

 Washington. 



As here understood tlie species includes the following. — The original .S. jiihatiim of Wash- 

 ington, with tall stout culms and large spikes with awns about 4 inches long (Ojai Valley, 

 Ventura Co. Eubby 48) : S. villosum, with villous-pubeseent leaves, and awns 2 to 3 inches long 

 (Modoc Co., Davy; Sonoma Co., Samufls 22.5; Solano Co., Heller 5580; Alameda Co., Bieuer 

 1220; Santa Clara Co., Elmer 5047; Stanislaus Co., Elmer 4852; Northfork, Griffitlis 4634; 

 Santa Lucia Mts., Davy 7681 ; Templeton, Davy 7601 ; Tehachapi, Chase 5742 ; Ramona. 

 Brandegee 88) : S. miiltisetum, similar to S. jubatum but culms lower and awns shorter, com- 

 mon in the Coast Ranges from the San Francisco Bay region southward, intergrading with 

 the typical form and also with S. villosum: and S. poUjanthrix , more or less pubescent, and 

 having awns IV^ to 2 inches long, a few scattere<l specimens resembling the type of S. polyan- 

 thrix (Yreka, Butler 823; Modoc Co., Griffltlis <J- Hu)iter 482; Di.xie Mts., Davy; Vacaville. 

 Jepsoii 4247; Los Gatos, Heller 7498, Hitchcock 2640; Mariposa Co., Congdon; Cuyamaca 

 Mts., Brandegee 111). The California specimens so intergrade that it has been impossible 

 to separate satisfactorily these forms. 



Refs.— SlT.\Nl0N JUB.\TUM J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 18: 10. 1899; 

 Abrams, Fl. Los Ang. 63. 1904. S. villostim J. G. Smith, U. S. Dept. Agr. Div. Agrost. Bull. 

 IS: 11. 1899. S. multisetum J. G. Smith, U, S. Dept. Agr. Div. Agrost. Bull. IS: 11. 1899. 

 type Coville cj- Ftmstoii 1121; Abrams, Fl. Los Ang. 63. 1904. .S. polyanlhrix .]. G. Smith, 

 V. S. Dept. Agr. Div. Agrost. Bull. 18: 12. 1899, based on Polyaiithrix hystrix. Polyanthrix 

 hystrix Nees, Ann. Nat. Hist. 1: 284. 1838, type from California, Douglas. All the Cali- 

 fornia species are included under Elymus sitaiiioit Schult. by Thurber (Wats. Bot. Cal. 2: 327. 

 1880) and Davy (Jepson, Fl. W. Mid. Cal. 81. 1901). 



3. S. breviaristatum J. G. Smith. Culms 1 to l^-; feet high; slieaths gla- 

 brous, slightly scabrous, the lower papery; Idades long, involute; spike 1 to 2 

 iiii'hes long; glumes split as in 8. jubatum. the awns of glumes and lemmas 7 

 to 111 lines long, spreading or recurved. 



A littled\nown species (or possibly a form of S. jidiatum i represented by only 

 two specimens: Jladison, IliUer 5577; Panamint Jits., CoviUe d- Fiinslon 833. 



Ref. — SiT.\NlON BREViARiST.^TUM .1. G. Smith, U. S. Dept. Agr. Div. .\grost. Bull, IS: 12. 

 1899, type Coville <^ Fuiiston 833. 



4. S. minus J. G. Smith. Culms low. much tufted, mostlx- 4 to S inches high ; 

 sheaths smooth or somewhat scabrous, or puberulent. the old ones usually 

 numerous at the base of the culms; blades smooth or pulierulent ; spike 1 to 2 

 inches long; glumes, or at least some of them, bifid from near the base; lemmas 

 smooth; awns about an inch long, spreading. 



Dry hills and rocky slopes, California to Washington, mostly at altitudes 

 above 50(10 feet. 



Tjocs. — Yreka, Butler 1278 (difl'ers in being pilose, thus referable to S. eilialum Elmer of 

 Washington, if that prove to be a distinct species): .Mt. Shasta, Brmon 372; Last Chance, 

 Dotcn 46; Ebbetts Pass, Brewer 2072; Mt. Lyell, Hitehcocl- 3305; Mt. Pinos, Hall 6551; 

 Griffin, Elmer 3990; Mt. San Antonio, Jhram./ 1932, 2700; San Gorgonio Peak, Hall 7633; 

 San Jacinto Peak, Seed 2497; Tahquitz Peak, Tieed 2530. 



Refs.— SiTANiON MINUS J. G. Smith, V. S. Dept. Agr. Div. Agrost. Bull. 18: 12. 1S99, type 

 from .T;icumba, San Diego Co., .'^rlioeiifeldl 3277. .'•'. rigidum .T. G. Smith, op. cit. 13. 



